PHYS 2019-2020 Lesson 2.R1 Review

[2019.06 #7] As shown in the diagram below, a rope attached to a 500.-kilogram crate is used to exert a force of 45 newtons at an angle of 65 degrees above the horizontal. The vertical component of the force acting on the crate is

• 19 N

• 41 N

• 210 N

• 450 N

Tags

NGSS.HS-PS2-1

[2019.06 #8] A spring with a spring constant of 68 newtons per meter hangs from a ceiling. When a 12-newton downward force is applied to the free end of the spring, the spring stretches a total distance of

• 0.18 m

• 0.59 m

• 5.7 m

• 820 m

[2019.06 #5] How would the mass and weight of an object on the Moon compare to the mass and weight of the same object on Earth?

• Mass and weight would both be less on the Moon.

• Mass would be the same but its weight would be less on the Moon.

• Mass would be less on the Moon and its weight would be the same.

• Mass and weight would both be the same on the Moon.

Tags

NGSS.HS-PS2-4

[2019.06 #18] A 40.0-kilogram child exerts a 100.-newton force on a 50.0-kilogram object. The magnitude of the force that the object exerts on the child is

• 0.0 N

• 80.0 N

• 100. N

• 125 N

Tags

NGSS.HS-PS2-1

[2019.06 #33] A student is standing in an elevator that travels from the first floor to the tenth floor of a building. The student exerts the greatest force on the floor of the elevator when the elevator is

• accelerating upward as it leaves the first floor.

• slowing down as it approaches the tenth floor.

• moving upward at constant speed.

• at rest on the first floor.

Tags

NGSS.HS-PS2-1

[2013.06 #12] An 8.0-newton block is accelerating down a frictionless ramp inclined at 15° to the horizontal, as shown in the diagram below. What is the magnitude of the net force causing the block's acceleration?

• 0 N

• 2.1 N

• 7.7 N

• 8.0 N

Tags

NGSS.HS-PS2-1

[2013.06 #40] A 4.0-kilogram object is accelerated at 3.0 meters per second² north by an unbalanced force. The same unbalanced force acting on a 2.0-kilogram object will accelerate this object toward the north at

• 12 m/s²

• 6.0 m/s²

• 3.0 m/s²

• 1.5 m/s²

Tags

NGSS.HS-PS2-1

[2013.06 #47] Which graph represents the relationship between the magnitude of the gravitational force, F_g, between two masses and the distance, r, between the centers of the masses?

• (1)

• (2)

• (3)

• (4)

Tags

NGSS.HS-PS2-4

[2018.06 #10] A tennis player’s racket applies an average force of 200. newtons to a tennis ball for 0.025 second. The average force exerted on the racket by the tennis ball is

• 0.025 N

• 5.0 N

• 200. N

• 80.0 N

Tags

NGSS.HS-PS2-1

[2018.06 #14] The magnitude of the gravitational field strength near Earth's surface is represented by

• $\frac{F_g}{m}$

• $G$

• $mg$

• $\frac{Gm_1m_2}{r^2}$

Tags

NGSS.HS-PS2-4